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Merycoidodon bullatus

Mammalia - Artiodactyla - Merycoidodontidae

Taxonomy
Oreodon bullatus was named by Leidy (1869). Its type specimen is ANSP 10681, a partial skull, and it is a 3D body fossil.

It was recombined as Eporeodon bullatus by Marsh (1875), Thorpe (1921), Sinclair (1924), Thorpe (1924), Thorpe (1937) and Scott (1940); it was synonymized subjectively with Eucrotaphus jacksoni by Cope (1884) and Lander (1998); it was recombined as Otionohyus (Otarohyus) bullatus by Schultz and Falkenbach (1968); it was recombined as Merycoidodon bullatus by Hay (1902), Ostrander (1985), Stevens and Stevens (1996) and Stevens and Stevens (2007).

Synonyms
Synonymy list
YearName and author
1869Oreodon bullatus Leidy
1875Eporeodon bullatus Marsh p. 250
1884Eporeodon socialis Marsh
1902Eucrotaphus helenae Douglass p. 265
1902Merycoidodon bullatus Hay
1907Eucrotaphus dickinsonensis Douglass p. 99
1921Eporeodon bullatus Thorpe p. 104
1924Eporeodon bullatus Sinclair
1924Eporeodon bullatus Thorpe
1924Eporeodon dickinsonensis Thorpe
1924Eporeodon helenae Thorpe
1930Eporeodon cedrensis Hay
1937Eporeodon bullatus Thorpe
1937Eporeodon dickinsonensis Thorpe
1937Eporeodon helenae Thorpe
1940Eporeodon bullatus Scott p. 678
1940Eporeodon socialis Scott p. 683
1940Eporeodon helenae Scott p. 685
1954Subdesmatochoerus socialis Schultz and Falkenbach p. 221 figs. 18 - 21
1968Genetochoerus dickinsonensis Schultz and Falkenbach
1968Merycoidodon (Anomerycoidodon) dani Schultz and Falkenbach p. 75 figs. 4-6, 20-23, 51
1968Merycoidodon (Blickohyus) galushai Schultz and Falkenbach p. 80 figs. 4-6, 52
1968Paramerycoidodon (Barbourochoerus) bacai Schultz and Falkenbach p. 91 figs. 7-9, 52
1968Otionohyus (Otarohyus) bullatus Schultz and Falkenbach p. 118 figs. 11-13, 19-23, 52
1968Otionohyus (Otarohyus) cedrensis Schultz and Falkenbach p. 127 figs. 11-13, 20, 23
1968Genetochoerus (Osbornohyus) norbeckensis Schultz and Falkenbach p. 143 figs. 14-16, 21-23, 52
1968Genetochoerus (Osbornohyus) geygani Schultz and Falkenbach p. 149 figs. 14-16, 19-23
1985Merycoidodon bullatus Ostrander
1996Merycoidodon bullatus Stevens and Stevens
1998Eucrotaphus galushai Lander
2007Merycoidodon bullatus Stevens and Stevens p. 160

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
RankNameAuthor
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
orderArtiodactyla()
suborderTylopoda()
superfamilyOreodontoidea
familyMerycoidodontidaeThorpe 1923
subfamilyMerycoidodontinae
genusMerycoidodon
speciesbullatus()

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
C. B. Schultz and C. H. Falkenbach 1954 (Subdesmatochoerus socialis)SKULL: Slightly larger than in holotype of S socialis dakotensis and average examples of Prodesmatochoerus meekae, smaller than in holotype of S. montanus and examples of S. shannonensis; exocc1pital with elongated vacuities smaller than in S. montanus and S. shannonensis; orbit smaller than. in S. shannonensis · paroccipital process wide at base, adhering' to the bulla; bulla well inflated, pit for hyoid attachment more prominent than in S. shannonensis (paroccipital process placed posterior to bulla, differing from S. montanus in which it is more laterally placed).
MANDIBLE: Postsymphysis below anterior portion of P 8 ; ramus of less depth than in the holotype of S. montanus; infenor border of ramus with gradual downward curve; ascending ramus moderately high.
DENTITION: Series slightly larger than in examples of P. meekae; approximately equal to those of S. shannonensis.
LIMBS:More robust and longer than examples of P. meekae.